Question
Read the passage given below and answer the following questions from 1 to 5.
When an object moves along a straight line with uniform acceleration, it is possible to relate its velocity, acceleration during motion and the distance covered by it in a certain time interval by a set of equations known as the equations of motion. For convenience, a set of three such equations are given below:
v = u + at
$\text{s}=\text{ut}+\frac{1}{2}\text{at}^2$
2a s = v2 – u2
Where u is the initial velocity of the object which moves with uniform acceleration a for Time t, v is the final velocity and s is the distance travelled by the object in time.
When an object moves along a straight line with uniform acceleration, it is possible to relate its velocity, acceleration during motion and the distance covered by it in a certain time interval by a set of equations known as the equations of motion. For convenience, a set of three such equations are given below:
v = u + at
$\text{s}=\text{ut}+\frac{1}{2}\text{at}^2$
2a s = v2 – u2
Where u is the initial velocity of the object which moves with uniform acceleration a for Time t, v is the final velocity and s is the distance travelled by the object in time.
- equation of motions are applicable to motion with
- uniform acceleration
- non uniform acceleration
- constant velocity
- none of these
- There are 4 equation of motion. True or false?
- True
- False
- The brakes applied to a car produce an acceleration of 10 m/s2 in the opposite direction to the motion. If the car takes 1 s to stop after the application of brakes, calculate the distance traveled during this time by car.
- An object is dropped from a tower falls with a constant acceleration of 10 m/s2. Find its speed 10 s after it was dropped.
- A bullet hits a Sand box with a velocity of 10 m/s and penetrates it up to a distance of 5 cm. Find the deceleration of the bullet in the sand box
